Hand turning-tool



(No Model.)

J. A. PLUMMER'. J12, & T. GAINFORD.

HAND TURNING TOOL. No. 270,474. PatentedJan. 9; 1883.

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UNiTEn STATES PATENT OFFICE.

JOHN A. PLUMMEB, JR, AND THOMAS GAINFORD, OF NEWARK, CALIFORNIA.

HAND TURNING-TOOL.

SPECIFICATION forming part of Letters Patent No. 270,474, dated January9, 1883.

Application filed May 2, 1882. (No model.)

To all whom it may concern I Be it known that we, JOHN A. PLUHTWIER,Jr., and THOMAS GAINFORD. of Newark, in the county of Alameda and Stateof California, have invented a new and Improved Hand Turning-Too], ofwhich the following is afull, clear, and exact description.

The object of our invention is to provide a new and improved hand-toolfor turning rods, to pivots, or pintles without the use of a lathe. Theinvention consists in the peculiar construction and arrangement ot'theparts, as hereinatter more fully set forth, and pointed out in theclaim.

Reference is to be had to the accompanying drawings, forming part ofthis specificai ion, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a longitudinal elevation of our improved turning-tool.

Fig. 1. Fig. 3 is a perspective view of the first cutting-bit. Fig. 4 isa perspective View of the second cutting-bit. Fig. 5 is a perspectiveview of the pipe or rod cutting bit. Fig. 6 is a perspective view of thepipe or rod holding bit. Fig. 7 is a side elevation of a modification ofour improved hand turningiOul. Fig. 8 isa perspective view of the clamp-0 ing-blocks of the same.

A hooked arm, A, is made integral with or attached to one end of a baror handle, B, which is provided at its upper end and on the inner sidewith two longitudinal jaws, G, be-

tween which the tenons a of the cutting-bits tit; A set-screw, D,provided at the outer end with a head or with wings for turning it,passes through the upper part of the bar or handle at right angles tothe same, so that the 0 inner end of this set-screw projects toward thebook A.

In the modification shown in Fig. 7 thehandle Bis curved and bent, so asto adapt it to be used in reaching pivots-or pintles on crossheads or onother like objects which cannot be reached with a straight handle. Thecutter-bit F is contained in a recess in the inner edge of the upperpart of the hook, and the rod or pivot G (see Fig. 7) is pressed againstFig. 2 is a horizontal. sectional view of the same on the line may it bya pressure-block, H, adapted to slide be- 5o tween the shanks of thehook, which block is pressed against the pivot or rod G by a setscrew,J, passing through the curved handle. The bit F is used to turn off therod in its rough state, and it planes off the bar, leaving it tolerablysmooth. Then the bit F is used, which turns down the surface of the rodor pivot true and smooth.

In the device shown in Figs. 1 and 2 the bit is pressed aguinstthe rodor pivot G with more or less pressure, as may be necessary, by theset-screw D, and in the device shown in Fig. 7this pressure is obtainedby means of the screw J.

The bit F (shown in Fig. 5) is used to cut tubes or rods, and the bit Fis used to hold pipes or rods in the same manner as they are held bypipe-tongs. The block H is provided with end ridges, h, fitting inlongitudinal grooves l in the sides of the shanks of the implement shownin Fig. 7 to guide this block H up and down between the shanks of thehook.

By turning the above-described tool or its modification around theobject to be planed, rods, pintles. pivots, wrist-pins, and like partsof machinery can be turned true and smooth very easily and rapidly.

This implement is very compact, can easily be stored in a locomotive orengine-room, and turns a rod or pivot as well as an expensive andcumbersome lathe.

Having thus fully described our invention, we claim as new and desire tosecure by Letters Patent- The combinatio' with the curved bar B,provided with a hook, A, having a recess in the inner edge of its upperpart, and grooves l in its sides, of the cutter-bit F, groovedpressure-block ll, having end lugs, h, fitting in the 0 grooves l, andscrew J, substantially as described, and for the purpose set forth.

JOHN ALLEN PLUMMER, JR. THOMAS GAINFORD.

Witnesses W. A. YATES, C. PRAG.

